Product Description

Tremco Butyl Sealant is formulated from a blend of butyl rubber and polyisobutylene to form an economical, flexible sealant.

Basic Uses

Tremco Butyl Sealant is used for sealing joints in applications such as curtainwall joints, metal panel joining, bedding thresholds, secondary glazing seals, and areas where a seal is required against Tremco Neoprene or EPDM gaskets.

Features and Benefits

  • Excellent primerless adhesion to most common substrates such as wood, metal, glass, concrete, and masonry surfaces.

  • Up to 10% movement capability

  • Good exterior grade, weather resistant caulk

  • Economical flexible sealant


White, Aluminum Stone, Black


300 ml (10.1 oz.) cartridges, 5-gallon (18.9 L) pails. 

Coverage Rate

35 linear feet of joint per 10.1 oz (300ml) cartridge for a
1/4” X 1/4” joint. For specific coverage rates that include joint size, and usage efficiencies, visit our website usage calculator at

Applicable Standards

Tremco Butyl Sealant meets or exceeds the requirements of the following specifications
• Conforms to U.S. Federal Specification TT-S-001657, Type 1
• ASTM C 1311

•CAN/CGSB 19-GP-14M, QPL 81002

Joint design

Tremco Butyl Sealant may be used in any vertical or horizontal joint designed in accordance with accepted architectural/ engineering practices. Joint width should be 4 times anticipated movement, but not less than 1/4” (6.4 mm).

Joint backing

Closed cell or reticulated polyethylene backer rod is recommended as joint backing to control sealant depth and
to ensure intimate contact of sealant with joint walls when
tooling. Where depth of joint will prevent the use of backer rod, an adhesive backed polyethylene tape (bond breaker tape) should be used to prevent three-sided adhesion. All backing should be dry at time of sealant application.